Blender 3D UVs scale issue appearing after export _FBX_OBJ_COLLADA
Zak! 
Thank you, yes I did that after the boolean operation.

Actually, I found the thing... I opened the programs individually and I saw the process of UV generating in the early beginning - by the default cube. It looks like there is the KEY for my issue. 

In each of the programs by default UV layers were generated for the 1st cube in a different configuration. I saw that in 3D's max, and Cinema4D they are equal to reset textures in Blender operation, stretched to the whole UV for each individual face.





Thank you! Anywhay!